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Universal Punch Concentricity Gaging SystemG1 Series · -40Side Carrier
G1-40 Side Checker Concentricity Gage
Large-capacity Side Carrier inspection for cylindrical components up to 4 inches in diameter.
The Universal Punch G1-40 is the largest size class in the G1 Side Checker family.
Its defining feature is the Side Carrier, which provides lateral indicator positioning
for inspection features best accessed from the side of the supported component.
Universal Punch source documentation consistently publishes a 3/4–4 in diameter class,
part lengths up to 8 in (203 mm), and an 11.2 lb (5.1 kg) shipping weight.
G1-40 · Side Checker Gage · Side Carrier.
Large -40 platform for side-access measurement configurations.
Part Diameter3/4–4 inConsistently published inch range
Part LengthUp to 8 in203 mm
CarrierSide CarrierG1 family architecture
Shipping Weight11.2 lb5.1 kg
G1-40 Product Definition
The largest Side Carrier configuration in the G1 family.
The G1 family uses a common inspection architecture: Side Checker Gage + Side Carrier.
The model suffix determines the size class. G1-40 extends that architecture to the large -40 inspection platform.
G1-40 at a glance
The Universal Punch G1-40 is a -40 Side Checker concentricity gage with a Side Carrier for larger cylindrical components.
The consistently published inch diameter range is 3/4–4 in, with part lengths up to 8 in (203 mm).
The system is configured around the selected gage model, main rollers, indicator system and required accessories.
Model logic: G1 identifies the Side Carrier architecture. -40 identifies the large size class.
G1-40 profile. The Side Carrier is the defining G1 measurement-access feature.
Side Carrier Architecture
Lateral indicator access for the large -40 inspection platform.
The Side Carrier positions the measurement indicator laterally relative to the supported component.
Final carrier position, stylus reach, contact direction and clearance should be selected from the actual drawing and inspection requirement.
01
Confirm the -40 inspection envelope
Verify part diameter, length and usable support surfaces before selecting the final configuration.
02
Identify repeatable cylindrical support lands
Select surfaces that can support stable rotational inspection on the chosen main rollers.
03
Confirm Side Carrier access to the feature
Configure indicator position, stylus reach and measurement direction around the actual feature.
Selection principle: choose G1-40 when the part requires the -40 platform and lateral Side Carrier access matches the inspection feature.
Published G1-40 Specifications
A single technical reference for the G1-40 platform.
Large-capacity G1 platform. Published platform dimensions and capacity are shown at right.
Model
G1-40
Gage Type
Side Checker Gage
Carrier
Side Carrier
Published Inch Diameter Range
3/4–4 in
Published Part Length
0.25–8 in / 6.3–203 mm general-data range
Gage Length
14.5 in / 368 mm
Gage Width
6 in / 152 mm
Gage Height
Approx. 8 in / 203 mm
Shipping Weight
11.2 lb / 5.1 kg
Legacy Product Literature20–102 mmPaired with the consistent 3/4–4 in inch range.General Data Table20–104 mmCurrent general-data reference for G1/G2-40.Current Selection Table20–105 mmCurrent -40 model-selection class.
Metric documentation note:
Universal Punch source documents are consistent on the 3/4–4 in inch range but contain different metric references by document generation.
For a specific metric application, confirm the current production capacity with Universal Punch engineering when quoting.
-40 Roller Selection
Select support geometry from the component, not from diameter alone.
Current Universal Punch parts documentation publishes three primary main-roller styles for the -40 model class.
Final selection depends on the component's support lands, adjacent geometry and required inspection clearance.
Standard -40 Top Roller
230-401 × 5/16 in · 25 × 8 mm
Full Plain Roller Set140-40FP
Half Plain Roller Set140-40HP
Quarter Plain Roller Set140-40QP
Published -40 top-roller family:
current parts documentation also lists 210-40, 221-40, 233-40, 231-40 and 232-40 top-roller configurations in addition to the standard 230-40.
Indicator access matters. The Side Carrier, indicator mount and stylus geometry should be selected as one measurement system.
Indicator Configuration
The readout is part of the gage specification.
Universal Punch defines the Concentricity Gaging System around three primary selections:
gage model, main rollers, and indicator(s) / accessories.
Current parts documentation includes analog and digital indicators, multiple mounts, swivel supports and dedicated -40 carrier components.
Publish the accuracy class that applies to the -40 model family.
Standard Black
≤4 µm0.00016 in published accuracy classification
Current Universal Punch parts documentation identifies Standard Black at ≤4 µm and describes the gage classifications as calibrated and directly traceable to NIST.
Not published for -40Current parts documentation limits Precision Gold to -10 / -20 models only
The G1-40 page should therefore publish Standard Black unless Universal Punch engineering specifically confirms a current custom or exception configuration.
Manual Rotational Drive
Dedicated -40 drive components support rotational inspection.
Current Universal Punch parts documentation lists dedicated Timing Belt Sets for Model -40
and a Complete Drive System for Model -40 consisting of belts, pulleys, drive knob and pin.
Published ComponentTiming Belt Set · -40
Published SystemComplete Drive System · -40
G1-40 drive-side detail. The -40 platform uses dedicated drive components documented in the Universal Punch parts system.
Optional Powered Rotation
A dedicated G1-40 variable-speed motor assembly is currently published.
Current Universal Punch parts documentation lists a G1-40 Variable Speed Motor Assembly
with a 19 in / 482 mm base plate.
The current drive-system section identifies 24 VDC / 0–10 rpm,
forward/reverse control and 110/220 VAC transformer support.
Manufacturer-controlled information for the G1-40 configuration.
The strongest reference for a production G1-40 is the combination of current Universal Punch model-selection,
parts, accessory, general-data and calibration documentation together with the actual customer drawing.
This page distinguishes current part-system information from historical catalog references where those sources differ.
Current Model SelectionG1-40 · Side Checker Gage · Side Carrier
Current model-selection documentation identifies G1-40 as the -40 Side Carrier configuration.
Current -40 Roller System140-40FP · 140-40HP · 140-40QP
Current parts documentation identifies Full Plain, Half Plain and Quarter Plain -40 main-roller sets.
Published Standard Top Roller230-40 · 1 × 5/16 in · 25 × 8 mm
Identified as the standard top roller for the -40 model class.
Current Accuracy ClassificationStandard Black · ≤4 µm
Precision Gold is published for -10 / -20 model classes only in the current parts documentation.
Current Motorized OptionG1-40 Variable Speed Motor Assembly
19 in / 482 mm base plate with the current 24 VDC / 0–10 rpm variable-speed drive architecture.
G1-40 Technical FAQ
Questions engineers, inspectors and buyers ask before specifying a G1-40.
The G1-40 is a -40 Side Checker concentricity gage with a Side Carrier for larger cylindrical components. Universal Punch consistently publishes a 3/4–4 in inch diameter class with part lengths up to 8 in (203 mm).
Universal Punch consistently publishes a 3/4–4 in inch diameter range and part lengths up to 8 in (203 mm). Metric references differ between source-document generations, so a specific metric application should be confirmed when quoting.
The inch specification remains consistently published at 3/4–4 in, while Universal Punch source documents from different generations use 20–102 mm, 20–104 mm and 20–105 mm references. This page therefore treats 3/4–4 in as the primary published diameter range and documents the metric-source differences separately.
Universal Punch publishes 11.2 lb (5.1 kg).
Current G1/G2-40 general-data literature lists approximately 14.5 in (368 mm) gage length, 6 in (152 mm) width and approximately 8 in (203 mm) height.
Both are -40 Side Checker gages in the large-size class. G1-40 uses a Side Carrier, while G2-40 uses a Vertical Carrier.
Current Universal Punch parts documentation lists Full Plain 140-40FP, Half Plain 140-40HP and Quarter Plain 140-40QP main roller sets for -40 models.
Current Universal Punch parts documentation identifies part number 230-40, 1 x 5/16 in (25 x 8 mm), as the standard -40 top roller.
No. Current Universal Punch parts documentation limits Precision Gold to -10 and -20 model classes. G1-40 is a -40 model, so the published classification for this page is Standard Black.
Current Universal Punch parts documentation identifies Standard Black at ≤4 µm (0.00016 in) and describes the calibration as directly traceable to NIST.
Yes. Current Universal Punch parts documentation includes analog and digital test indicators together with multiple indicator mounts, swivel supports and carrier accessories. The appropriate range, resolution and mounting should be selected from the inspection requirement.
Yes. Current Universal Punch parts documentation explicitly lists a G1-40 Variable Speed Motor Assembly with a 19 in (482 mm) base plate.
The current Universal Punch variable-speed drive architecture is documented at 24 VDC with a 0–10 rpm range and forward/reverse control.
Send the part drawing, diameter, overall length, usable cylindrical support surfaces, feature being measured, measurement direction, tolerance, Side Carrier clearance, preferred indicator or readout, required resolution, calibration requirements, and whether manual or motorized rotation is preferred.
Configure the G1-40 Around the Actual Component
The drawing—not the product photograph—determines the final configuration.
Send Universal Punch the part drawing, diameter, overall length, available cylindrical support lands,
feature being inspected, measurement direction, Side Carrier clearance, tolerance, preferred indicator/readout,
required resolution, manual or motorized rotation preference, and calibration requirements.
